the effect of adding Glass Powder toconcrete to improve the properties ofconcrete.

2-

The effect of adding Glass Powder as anadmixture on the durability and thethermal insulation .

3-

The benefits of addition Glass Powderis to minimize the risk of theEnvironmental Pollution.

Literature Review

In2009, EngineerImad

Qasim

doing a study onthe impact of glass powder on concrete and he wasmade some tests ; These tests include compressivestrength, flexural strength, and flow table test(workability test).

Twenty kilograms of glass powder was used as apartial replacement for cement and sand (silica andlimestone) by0%,10%,15%, and20%. Sevenmortar mixtures were tested at room temperature,four mixtures were cured by water and threemixtures were cured by high pressure steam curing(autoclaving).

Methodology

We will crashfourty

five kilograms of wasteflat glass and prepare it as powder to be usedascementitous

or filler materials in mortarmixes.

In Those mixtures waste glass powder weused them as replacement of cement or sandat percentage0% ,5% ,10% ,15% , in orderto show the effect of waste glass powder onthe mechanical properties of mortar and thethermal insulation .

Composition

There are manytypes of concrete

available, created byvarying the proportions of the main ingredients below. Byvarying the proportions of materials, or by substitution forthecemetitious

and aggregate phases, the finished productcan be tailored to its application with varying strength,density, or chemical and thermal resistance properties.

Themix design

depends on the type of structure being built,how the concrete will be mixed and delivered, and how itwill be placed to form this structure.

Concrete is strong incompression, asthe aggregate efficiently carries thecompression load. However, it is weak intension as the cement holding theaggregate in place can crack, allowingthe structure to fail.Reinforced concrete

Workability is the ability of a fresh (plastic) concrete mix to fillthe form/mold properly with the desired work (vibration) andwithout reducing the concrete's quality. Workability dependson water content,aggregate

(shape and size distribution),cementitious

content and age (level ofhydration), and canbe modified by adding chemical admixtures, likesuperplasticizer. Raising the water content or addingchemical admixtures will increase concrete workability.Excessive water will lead to increased bleeding (surfacewater) and/or segregation of aggregates (when the cementand aggregates start to separate), with the resulting concretehaving reduced quality.

basically the apparatus consists of tow plates withdimensions of (54*54) cm, one is upper the otherother

isbelow, knowing that the upper is flexible , and we canmove it, as needed.

Procedure :

-

heating the upper plate to constant temperature .

-

Putting any material between plates .

-

the heat well transfer through the material to the lowerplate .

-

the apparatus well calculate the heat transfer rate, andgiven the value of conductivity of the material.

With15% Replacement bylimestone

Without WGP

Heat Flow Test Results

Thermalrisistance

K/W

HFT

Thermal

conductivity

W/m.k

Without

WGP

0.06804

126.0403

0.4749

15 %LimestoneRep

0..06648

119.864

0.46607

15%CementRep

error

error

Error

The results show that there is not asignificant effect measured when the glasspowder is replaced with either cement orlimestone. There is not a significantdifference. The results are very close toeach other and resemble each other; theobtained results do not differ significantly.

The error on third one happen because wehave voids in it and it wasn’t made right.

Abrasion test

The last test that was supposed to beconducted to complete this research isthe abrasion-test. Unfortunately, theneeded materials to conduct theexperiment were not available at thetime of the research, neither at the An-Najah

university or in the field. Theresults will therefore not be provided inthis paper.

Abrasion test

Abrasion test stand

Disk & wear plates

Measuring thickness

Summary andConclution

Waste glass powder is a new supplementary material that canbe used in mortar mixtures. In this conducted study, more than48mixes of mortar were prepared by using waste glass powderas a replacement for cement or for limestone. Mechanicalproperties were tested. The mechanical properties includecompressive strength.

As described in the result section and the abstract, the resultsshow us that when the limestone is replaced by waste glasspowder, the compressive strength will increase because it is afiller. Because the limestone contains a lot of voids, the glasspowder serves as a filler material. On the contrary, whenreplacing glass powder with cement, the compressive strengthwill decrease. Cement is the main material for the strength ofmortar or concrete.

Summary andConclution

Another experiment conducted in this study is the heat flowtest. The results show that there is no significant effectmeasured when the glass powder is replaced with eithercement or limestone. The results are very close to each otherand resemble each other; the obtained results do not differsignificantly.

Waste glass powder is a relatively new supplementarycementing material that can be used in the mortar mixtures. Itplays a significant role to improve the fresh properties,mechanical properties and durability of mortar.

If we use the waste glass powder as a replacement forlimestone, the compressive strength of mortar increasessignificantly. In addition, the maximum compressive strength ofmortar can be achieved when using10% and15% of wasteglass powder instead of limestone.

Recommendations

There are several recommendations that can be made for futureresearch in this aspect. The usage of the WGP instead oflimestone is an interesting possibility because of the strength.Until now though, there has not been found a way to use itinstead of cement, since cement is a major component andmaterial for compressive strength.. Further research in the useof WGP is needed in order to generate the full potential of thewaste glass powder.

Other recommendations for this research include:

-

Conduct experiments on durability and Permeability

-

After we increase the percentage into more than15%, whatwould happen to the compressive strength?

-

Check if the percentage in strength is good enough to make thechange or what?